I thought BMW said the PE was good for a 4 Hp gain. But then I also saw a thread where some magazine tested their "project car" and it lost 6 WHP.

All I know is I still WANT a PE bad!!! I don't think anything BMW Performance puts their name on makes fewer Hp.

I want one too, I agree, I don't think they put out anything that would loose hp, 4 makes sense,,3-5,,,4 in the middle, Id be happy with four as long as it sounds awesome, stock sounds pretty good but a little deeper and louder would be nice. I think its reasonable too, under 1500 installed, keeps warranty good

Last edited by 2totalled2months; 12-22-2012 at 06:38 PM.
Reason: adding